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network/route: fix reachability check when peer address is specified

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When an address with peer address is specified, the kernel by default
adds the prefix route for the peer address. When ManageForeignRoute=no
is set, then we also needs to check the prefix for the peer address.

Fixes #30403.

(cherry picked from commit e091ed4053)
This commit is contained in:
Yu Watanabe 2023-12-10 13:56:46 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 056186b038
commit b641ced147
1 changed files with 3 additions and 3 deletions
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6
src/network/networkd-route-util.c
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@ -162,9 +162,9 @@ bool gateway_is_ready(Link *link, bool onlink, int family, const union in_addr_u
continue;
if (FLAGS_SET(a->flags, IFA_F_NOPREFIXROUTE))
continue;
if (in_addr_is_set(a->family, &a->in_addr_peer))
continue;
if (in_addr_prefix_covers(family, &a->in_addr, a->prefixlen, gw) > 0)
if (in_addr_prefix_covers(a->family,
in_addr_is_set(a->family, &a->in_addr_peer) ? &a->in_addr_peer : &a->in_addr,
a->prefixlen, gw) > 0)
return true;
}